Boot error: Gave up waiting for root device ALERT! /dev/disk/by-uuid/... does not exist. Dropping to a shell

I suggest trying all the workaround procedures in the following 2 bugreports:

https://bugs.launchpad.net/ubuntu/+bug/579572

and

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/360378

Also try this:

http://ubuntuforums.org/showthread.php?t=1399810

Thanks Mark. I've opted for the GRUB_DISABLE_LINUX_UUID=true workaround for now and will see how it goes.

Could you mark question as solved, to avoid someone have a look to answer ? Thank you

I am having this problem also with a new PC. I am too new to Linux/Ubuntu to know what to do.
I am not sure what Sudu or Grub are or where to find them. I assume it is akin to a dos command in windows.
I am trying to load my Windows 7 desktop with a dual boot of Ubuntu and am getting the same error.
I loaded Ubuntu on my laptop with very little problems. I'm trying to run before I've figured out how to crawl yet.
I need some step by step for dummies to get my desktop working in Ubuntu.
Thanks

GRUB is a program that selects and loads an operating system (e.g. Ubuntu or Windows). When you reboot your laptop, do you get a menu of OS'es with GRUB somewhere in the title? If so, try the third link listed by Mark R above and follow the instructions in post #2, but instead of setting the boot device (the /dev/sdx stuff) add this to the command line: rootdelay=90

If this doesn't work, or you don't get the GRUB menu, then I'm not sure how to help. Reading the posts I noticed some people talk about waiting a few minutes after seeing the error, after which their system boots after all, but I haven't experienced it myself. Someone more knowledgeable may have to chip in here.

Delance, I can't mark this issue as solved, because the original problem still occurs, i.e. the system freezes soon after logging in, although not every time. Since applying the GRUB_DISABLE_LINUX_UUID=true workaround the waiting for the root device alert seems to have stopped happening, though. In view of this, I think the title of this issue should be renamed back to its original description.

No, please create a separate question for the system freeze issue, which is a totally separate issue.

Please use this link to create the new question:

https://answers.launchpad.net/ubuntu/+addquestion

Please set this thread to "solved", which is about the "Gave up waiting for root device" issue.

No is better you do a new fresh question about your sound issue from here:

https://answers.launchpad.net/ubuntu/+addquestion

( i also change now the original content to better match you solved uuid issue )

Please always ask one question for a thread.

Thanks